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| author | Alistair Francis | 2020-04-23 19:50:09 +0200 |
|---|---|---|
| committer | Alistair Francis | 2020-06-03 18:11:51 +0200 |
| commit | 36b80ad99f7ea4979a4c5fc6e4072619b405e3b0 (patch) | |
| tree | 9ba62390cd163c7be8fae917cedeabeadf3d0160 | |
| parent | target/riscv: Don't set PMP feature in the cpu init (diff) | |
| download | qemu-36b80ad99f7ea4979a4c5fc6e4072619b405e3b0.tar.gz qemu-36b80ad99f7ea4979a4c5fc6e4072619b405e3b0.tar.xz qemu-36b80ad99f7ea4979a4c5fc6e4072619b405e3b0.zip | |
target/riscv: Add the lowRISC Ibex CPU
Ibex is a small and efficient, 32-bit, in-order RISC-V core with
a 2-stage pipeline that implements the RV32IMC instruction set
architecture.
For more details on lowRISC see here:
https://github.com/lowRISC/ibex
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
| -rw-r--r-- | target/riscv/cpu.c | 10 | ||||
| -rw-r--r-- | target/riscv/cpu.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 54829217dc..9007a25656 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -144,6 +144,15 @@ static void rv32gcsu_priv1_10_0_cpu_init(Object *obj) set_resetvec(env, DEFAULT_RSTVEC); } +static void rv32imcu_nommu_cpu_init(Object *obj) +{ + CPURISCVState *env = &RISCV_CPU(obj)->env; + set_misa(env, RV32 | RVI | RVM | RVC | RVU); + set_priv_version(env, PRIV_VERSION_1_10_0); + set_resetvec(env, 0x8090); + qdev_prop_set_bit(DEVICE(obj), "mmu", false); +} + static void rv32imacu_nommu_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; @@ -593,6 +602,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), #if defined(TARGET_RISCV32) DEFINE_CPU(TYPE_RISCV_CPU_BASE32, riscv_base32_cpu_init), + DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32imcu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32imacu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32imafcu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32gcsu_priv1_10_0_cpu_init), diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index c022539012..80569f0d44 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -35,6 +35,7 @@ #define TYPE_RISCV_CPU_ANY RISCV_CPU_TYPE_NAME("any") #define TYPE_RISCV_CPU_BASE32 RISCV_CPU_TYPE_NAME("rv32") #define TYPE_RISCV_CPU_BASE64 RISCV_CPU_TYPE_NAME("rv64") +#define TYPE_RISCV_CPU_IBEX RISCV_CPU_TYPE_NAME("lowrisc-ibex") #define TYPE_RISCV_CPU_SIFIVE_E31 RISCV_CPU_TYPE_NAME("sifive-e31") #define TYPE_RISCV_CPU_SIFIVE_E34 RISCV_CPU_TYPE_NAME("sifive-e34") #define TYPE_RISCV_CPU_SIFIVE_E51 RISCV_CPU_TYPE_NAME("sifive-e51") |